diff --git a/hal/Hal.cpp b/hal/Hal.cpp
index 392338c08ee..537735bff80 100644
--- a/hal/Hal.cpp
+++ b/hal/Hal.cpp
@@ -420,18 +420,6 @@ void SetScreenBrightness(double aBrightness)
   PROXY_IF_SANDBOXED(SetScreenBrightness(clamped(aBrightness, 0.0, 1.0)));
 }
 
-bool SetLight(LightType light, const LightConfiguration& aConfig)
-{
-  AssertMainThread();
-  RETURN_PROXY_IF_SANDBOXED(SetLight(light, aConfig), false);
-}
-
-bool GetLight(LightType light, LightConfiguration* aConfig)
-{
-  AssertMainThread();
-  RETURN_PROXY_IF_SANDBOXED(GetLight(light, aConfig), false);
-}
-
 class SystemClockChangeObserversManager : public ObserversManager<int64_t>
 {
 protected:
diff --git a/hal/Hal.h b/hal/Hal.h
index 6cce248a9f0..44f7bb5dd99 100644
--- a/hal/Hal.h
+++ b/hal/Hal.h
@@ -168,24 +168,6 @@ bool GetCpuSleepAllowed();
  */
 void SetCpuSleepAllowed(bool aAllowed);
 
-/**
- * Set the value of a light to a particular color, with a specific flash pattern.
- * light specifices which light.  See Hal.idl for the list of constants
- * mode specifies user set or based on ambient light sensor
- * flash specifies whether or how to flash the light
- * flashOnMS and flashOffMS specify the pattern for XXX flash mode
- * color specifies the color.  If the light doesn't support color, the given color is
- * transformed into a brightness, or just an on/off if that is all the light is capable of.
- * returns true if successful and false if failed.
- */
-bool SetLight(hal::LightType light, const hal::LightConfiguration& aConfig);
-/**
- * GET the value of a light returning a particular color, with a specific flash pattern.
- * returns true if successful and false if failed.
- */
-bool GetLight(hal::LightType light, hal::LightConfiguration* aConfig);
-
-
 /**
  * Register an observer for the sensor of given type.
  *
diff --git a/hal/HalInternal.h b/hal/HalInternal.h
index 1c36f6f1fc1..50ea373363d 100644
--- a/hal/HalInternal.h
+++ b/hal/HalInternal.h
@@ -14,7 +14,7 @@
  *
  * The difference between Hal.h and HalInternal.h is that methods declared in
  * HalInternal.h don't appear in the hal namespace. That also means this file
- * should not be included except by HalInternal.h and HalSandbox.h.
+ * should not be included except by HalImpl.h and HalSandbox.h.
  */
 
 #ifndef MOZ_HAL_NAMESPACE
diff --git a/hal/fallback/FallbackLights.cpp b/hal/fallback/FallbackLights.cpp
deleted file mode 100644
index 04670878a24..00000000000
--- a/hal/fallback/FallbackLights.cpp
+++ /dev/null
@@ -1,28 +0,0 @@
-/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
- * vim: sw=2 ts=8 et :
- */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this file,
- * You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#include "Hal.h"
-
-namespace mozilla {
-namespace hal_impl {
-
-bool
-SetLight(hal::LightType light, const hal::LightConfiguration& aConfig)
-{
-  return true;
-}
-
-bool
-GetLight(hal::LightType light, hal::LightConfiguration* aConfig)
-{
-  aConfig->light() = light;
-  // The rest of the fields are 0 by default, which is fine.
-  return true;
-}
-
-} // namespace hal_impl
-} // namespace mozilla
diff --git a/hal/gonk/GonkHal.cpp b/hal/gonk/GonkHal.cpp
index 212d6be685c..f021b91b30d 100644
--- a/hal/gonk/GonkHal.cpp
+++ b/hal/gonk/GonkHal.cpp
@@ -109,6 +109,128 @@ using namespace mozilla::hal;
 namespace mozilla {
 namespace hal_impl {
 
+struct LightConfiguration {
+  hal::LightType light;
+  hal::LightMode mode;
+  hal::FlashMode flash;
+  uint32_t flashOnMS;
+  uint32_t flashOffMS;
+  uint32_t color;
+};
+
+static light_device_t* sLights[hal::eHalLightID_Count]; // will be initialized to nullptr
+
+static light_device_t*
+GetDevice(hw_module_t* module, char const* name)
+{
+  int err;
+  hw_device_t* device;
+  err = module->methods->open(module, name, &device);
+  if (err == 0) {
+    return (light_device_t*)device;
+  } else {
+    return nullptr;
+  }
+}
+
+static void
+InitLights()
+{
+  // assume that if backlight is nullptr, nothing has been set yet
+  // if this is not true, the initialization will occur everytime a light is read or set!
+  if (!sLights[hal::eHalLightID_Backlight]) {
+    int err;
+    hw_module_t* module;
+
+    err = hw_get_module(LIGHTS_HARDWARE_MODULE_ID, (hw_module_t const**)&module);
+    if (err == 0) {
+      sLights[hal::eHalLightID_Backlight]
+             = GetDevice(module, LIGHT_ID_BACKLIGHT);
+      sLights[hal::eHalLightID_Keyboard]
+             = GetDevice(module, LIGHT_ID_KEYBOARD);
+      sLights[hal::eHalLightID_Buttons]
+             = GetDevice(module, LIGHT_ID_BUTTONS);
+      sLights[hal::eHalLightID_Battery]
+             = GetDevice(module, LIGHT_ID_BATTERY);
+      sLights[hal::eHalLightID_Notifications]
+             = GetDevice(module, LIGHT_ID_NOTIFICATIONS);
+      sLights[hal::eHalLightID_Attention]
+             = GetDevice(module, LIGHT_ID_ATTENTION);
+      sLights[hal::eHalLightID_Bluetooth]
+             = GetDevice(module, LIGHT_ID_BLUETOOTH);
+      sLights[hal::eHalLightID_Wifi]
+             = GetDevice(module, LIGHT_ID_WIFI);
+        }
+    }
+}
+
+/**
+ * The state last set for the lights until liblights supports
+ * getting the light state.
+ */
+static light_state_t sStoredLightState[hal::eHalLightID_Count];
+
+/**
+* Set the value of a light to a particular color, with a specific flash pattern.
+* light specifices which light.  See Hal.idl for the list of constants
+* mode specifies user set or based on ambient light sensor
+* flash specifies whether or how to flash the light
+* flashOnMS and flashOffMS specify the pattern for XXX flash mode
+* color specifies the color.  If the light doesn't support color, the given color is
+* transformed into a brightness, or just an on/off if that is all the light is capable of.
+* returns true if successful and false if failed.
+*/
+static bool
+SetLight(hal::LightType light, const LightConfiguration& aConfig)
+{
+  light_state_t state;
+
+  InitLights();
+
+  if (light < 0 || light >= hal::eHalLightID_Count ||
+      sLights[light] == nullptr) {
+    return false;
+  }
+
+  memset(&state, 0, sizeof(light_state_t));
+  state.color = aConfig.color;
+  state.flashMode = aConfig.flash;
+  state.flashOnMS = aConfig.flashOnMS;
+  state.flashOffMS = aConfig.flashOffMS;
+  state.brightnessMode = aConfig.mode;
+
+  sLights[light]->set_light(sLights[light], &state);
+  sStoredLightState[light] = state;
+  return true;
+}
+
+/**
+* GET the value of a light returning a particular color, with a specific flash pattern.
+* returns true if successful and false if failed.
+*/
+static bool
+GetLight(hal::LightType light, LightConfiguration* aConfig)
+{
+  light_state_t state;
+
+  if (light < 0 || light >= hal::eHalLightID_Count ||
+      sLights[light] == nullptr) {
+    return false;
+  }
+
+  memset(&state, 0, sizeof(light_state_t));
+  state = sStoredLightState[light];
+
+  aConfig->light = light;
+  aConfig->color = state.color;
+  aConfig->flash = hal::FlashMode(state.flashMode);
+  aConfig->flashOnMS = state.flashOnMS;
+  aConfig->flashOffMS = state.flashOffMS;
+  aConfig->mode = hal::LightMode(state.brightnessMode);
+
+  return true;
+}
+
 namespace {
 
 /**
@@ -282,13 +404,14 @@ public:
       color = BATTERY_CHARGING_ARGB;
     } // else turn off battery indicator.
 
-    hal::LightConfiguration aConfig(hal::eHalLightID_Battery,
-                                    hal::eHalLightMode_User,
-                                    hal::eHalLightFlash_None,
-                                    0,
-                                    0,
-                                    color);
-    hal_impl::SetLight(hal::eHalLightID_Battery, aConfig);
+    LightConfiguration aConfig;
+    aConfig.light = hal::eHalLightID_Battery;
+    aConfig.mode = hal::eHalLightMode_User;
+    aConfig.flash = hal::eHalLightFlash_None;
+    aConfig.flashOnMS = aConfig.flashOffMS = 0;
+    aConfig.color = color;
+
+    SetLight(hal::eHalLightID_Battery, aConfig);
 
     hal::NotifyBatteryChange(info);
 
@@ -549,19 +672,19 @@ SetScreenEnabled(bool aEnabled)
 bool
 GetKeyLightEnabled()
 {
-  hal::LightConfiguration config;
-  hal_impl::GetLight(hal::eHalLightID_Buttons, &config);
-  return (config.color() != 0x00000000);
+  LightConfiguration config;
+  GetLight(hal::eHalLightID_Buttons, &config);
+  return (config.color != 0x00000000);
 }
 
 void
 SetKeyLightEnabled(bool aEnabled)
 {
-  hal::LightConfiguration config;
-  config.mode() = hal::eHalLightMode_User;
-  config.flash() = hal::eHalLightFlash_None;
-  config.flashOnMS() = config.flashOffMS() = 0;
-  config.color() = 0x00000000;
+  LightConfiguration config;
+  config.mode = hal::eHalLightMode_User;
+  config.flash = hal::eHalLightFlash_None;
+  config.flashOnMS = config.flashOffMS = 0;
+  config.color = 0x00000000;
 
   if (aEnabled) {
     // Convert the value in [0, 1] to an int between 0 and 255 and then convert
@@ -571,22 +694,22 @@ SetKeyLightEnabled(bool aEnabled)
     uint32_t val = static_cast<int>(round(brightness * 255.0));
     uint32_t color = (0xff<<24) + (val<<16) + (val<<8) + val;
 
-    config.color() = color;
+    config.color = color;
   }
 
-  hal_impl::SetLight(hal::eHalLightID_Buttons, config);
-  hal_impl::SetLight(hal::eHalLightID_Keyboard, config);
+  SetLight(hal::eHalLightID_Buttons, config);
+  SetLight(hal::eHalLightID_Keyboard, config);
 }
 
 double
 GetScreenBrightness()
 {
-  hal::LightConfiguration config;
+  LightConfiguration config;
   hal::LightType light = hal::eHalLightID_Backlight;
 
-  hal_impl::GetLight(light, &config);
+  GetLight(light, &config);
   // backlight is brightness only, so using one of the RGB elements as value.
-  int brightness = config.color() & 0xFF;
+  int brightness = config.color & 0xFF;
   return brightness / 255.0;
 }
 
@@ -606,15 +729,15 @@ SetScreenBrightness(double brightness)
   uint32_t val = static_cast<int>(round(brightness * 255.0));
   uint32_t color = (0xff<<24) + (val<<16) + (val<<8) + val;
 
-  hal::LightConfiguration config;
-  config.mode() = hal::eHalLightMode_User;
-  config.flash() = hal::eHalLightFlash_None;
-  config.flashOnMS() = config.flashOffMS() = 0;
-  config.color() = color;
-  hal_impl::SetLight(hal::eHalLightID_Backlight, config);
+  LightConfiguration config;
+  config.mode = hal::eHalLightMode_User;
+  config.flash = hal::eHalLightFlash_None;
+  config.flashOnMS = config.flashOffMS = 0;
+  config.color = color;
+  SetLight(hal::eHalLightID_Backlight, config);
   if (GetKeyLightEnabled()) {
-    hal_impl::SetLight(hal::eHalLightID_Buttons, config);
-    hal_impl::SetLight(hal::eHalLightID_Keyboard, config);
+    SetLight(hal::eHalLightID_Buttons, config);
+    SetLight(hal::eHalLightID_Keyboard, config);
   }
 }
 
@@ -656,113 +779,6 @@ SetCpuSleepAllowed(bool aAllowed)
   UpdateCpuSleepState();
 }
 
-static light_device_t* sLights[hal::eHalLightID_Count];	// will be initialized to nullptr
-
-light_device_t* GetDevice(hw_module_t* module, char const* name)
-{
-  int err;
-  hw_device_t* device;
-  err = module->methods->open(module, name, &device);
-  if (err == 0) {
-    return (light_device_t*)device;
-  } else {
-    return nullptr;
-  }
-}
-
-void
-InitLights()
-{
-  // assume that if backlight is nullptr, nothing has been set yet
-  // if this is not true, the initialization will occur everytime a light is read or set!
-  if (!sLights[hal::eHalLightID_Backlight]) {
-    int err;
-    hw_module_t* module;
-
-    err = hw_get_module(LIGHTS_HARDWARE_MODULE_ID, (hw_module_t const**)&module);
-    if (err == 0) {
-      sLights[hal::eHalLightID_Backlight]
-             = GetDevice(module, LIGHT_ID_BACKLIGHT);
-      sLights[hal::eHalLightID_Keyboard]
-             = GetDevice(module, LIGHT_ID_KEYBOARD);
-      sLights[hal::eHalLightID_Buttons]
-             = GetDevice(module, LIGHT_ID_BUTTONS);
-      sLights[hal::eHalLightID_Battery]
-             = GetDevice(module, LIGHT_ID_BATTERY);
-      sLights[hal::eHalLightID_Notifications]
-             = GetDevice(module, LIGHT_ID_NOTIFICATIONS);
-      sLights[hal::eHalLightID_Attention]
-             = GetDevice(module, LIGHT_ID_ATTENTION);
-      sLights[hal::eHalLightID_Bluetooth]
-             = GetDevice(module, LIGHT_ID_BLUETOOTH);
-      sLights[hal::eHalLightID_Wifi]
-             = GetDevice(module, LIGHT_ID_WIFI);
-        }
-    }
-}
-
-/**
- * The state last set for the lights until liblights supports
- * getting the light state.
- */
-static light_state_t sStoredLightState[hal::eHalLightID_Count];
-
-bool
-SetLight(hal::LightType light, const hal::LightConfiguration& aConfig)
-{
-  light_state_t state;
-
-  InitLights();
-
-  if (light < 0 || light >= hal::eHalLightID_Count ||
-      sLights[light] == nullptr) {
-    return false;
-  }
-
-  memset(&state, 0, sizeof(light_state_t));
-  state.color = aConfig.color();
-  state.flashMode = aConfig.flash();
-  state.flashOnMS = aConfig.flashOnMS();
-  state.flashOffMS = aConfig.flashOffMS();
-  state.brightnessMode = aConfig.mode();
-
-  sLights[light]->set_light(sLights[light], &state);
-  sStoredLightState[light] = state;
-  return true;
-}
-
-bool
-GetLight(hal::LightType light, hal::LightConfiguration* aConfig)
-{
-  light_state_t state;
-
-#ifdef HAVEGETLIGHT
-  InitLights();
-#endif
-
-  if (light < 0 || light >= hal::eHalLightID_Count ||
-      sLights[light] == nullptr) {
-    return false;
-  }
-
-  memset(&state, 0, sizeof(light_state_t));
-
-#ifdef HAVEGETLIGHT
-  sLights[light]->get_light(sLights[light], &state);
-#else
-  state = sStoredLightState[light];
-#endif
-
-  aConfig->light() = light;
-  aConfig->color() = state.color;
-  aConfig->flash() = hal::FlashMode(state.flashMode);
-  aConfig->flashOnMS() = state.flashOnMS;
-  aConfig->flashOffMS() = state.flashOffMS;
-  aConfig->mode() = hal::LightMode(state.brightnessMode);
-
-  return true;
-}
-
 void
 AdjustSystemClock(int64_t aDeltaMilliseconds)
 {
diff --git a/hal/moz.build b/hal/moz.build
index c6582462327..565eda44482 100644
--- a/hal/moz.build
+++ b/hal/moz.build
@@ -151,7 +151,6 @@ if CONFIG['MOZ_WIDGET_TOOLKIT'] != 'gonk':
         'fallback/FallbackDiskSpaceWatcher.cpp',
         'fallback/FallbackFactoryReset.cpp',
         'fallback/FallbackFMRadio.cpp',
-        'fallback/FallbackLights.cpp',
         'fallback/FallbackProcessPriority.cpp',
         'fallback/FallbackScreenPower.cpp',
         'fallback/FallbackSwitch.cpp',
diff --git a/hal/sandbox/PHal.ipdl b/hal/sandbox/PHal.ipdl
index 79826fc06af..46927791b1e 100644
--- a/hal/sandbox/PHal.ipdl
+++ b/hal/sandbox/PHal.ipdl
@@ -10,9 +10,6 @@ include protocol PBrowser;
 include "mozilla/GfxMessageUtils.h";
 
 using mozilla::dom::ScreenOrientation from "mozilla/dom/ScreenOrientation.h";
-using mozilla::hal::FlashMode from "mozilla/HalTypes.h";
-using mozilla::hal::LightType from "mozilla/HalTypes.h";
-using mozilla::hal::LightMode from "mozilla/HalTypes.h";
 using mozilla::hal::SensorType from "mozilla/HalSensor.h";
 using mozilla::hal::SensorAccuracyType from "mozilla/HalSensor.h";
 using mozilla::hal::WakeLockControl from "mozilla/HalTypes.h";
@@ -34,15 +31,6 @@ struct BatteryInformation {
   double remainingTime;
 };
 
-struct LightConfiguration {
-  LightType light;
-  LightMode mode;
-  FlashMode flash;
-  uint32_t flashOnMS;
-  uint32_t flashOffMS;
-  uint32_t color;
-};
-
 struct SensorData {
   SensorType sensor;
   PRTime timestamp;
@@ -149,11 +137,6 @@ parent:
     EnableSystemTimezoneChangeNotifications();
     DisableSystemTimezoneChangeNotifications();
 
-    sync SetLight(LightType light, LightConfiguration aConfig)
-      returns (bool status);
-    sync GetLight(LightType light)
-      returns (LightConfiguration aConfig, bool status);
-
     ModifyWakeLock(nsString aTopic,
                    WakeLockControl aLockAdjust,
                    WakeLockControl aHiddenAdjust,
diff --git a/hal/sandbox/SandboxHal.cpp b/hal/sandbox/SandboxHal.cpp
index ea48113155e..5f16c4455cc 100644
--- a/hal/sandbox/SandboxHal.cpp
+++ b/hal/sandbox/SandboxHal.cpp
@@ -190,22 +190,6 @@ SetScreenBrightness(double aBrightness)
   Hal()->SendSetScreenBrightness(aBrightness);
 }
 
-bool
-SetLight(hal::LightType light, const hal::LightConfiguration& aConfig)
-{
-  bool status;
-  Hal()->SendSetLight(light, aConfig, &status);
-  return status;
-}
-
-bool
-GetLight(hal::LightType light, hal::LightConfiguration* aConfig)
-{
-  bool status;
-  Hal()->SendGetLight(light, aConfig, &status);
-  return status;
-}
-
 void 
 AdjustSystemClock(int64_t aDeltaMilliseconds)
 {
@@ -686,30 +670,6 @@ public:
     return true;
   }
 
-  virtual bool
-  RecvSetLight(const LightType& aLight,  const hal::LightConfiguration& aConfig, bool *status) MOZ_OVERRIDE
-  {
-    // XXX currently, the hardware key light and screen backlight are
-    // controlled as a unit.  Those are set through the power API, and
-    // there's no other way to poke lights currently, so we require
-    // "power" privileges here.
-    if (!AssertAppProcessPermission(this, "power")) {
-      return false;
-    }
-    *status = hal::SetLight(aLight, aConfig);
-    return true;
-  }
-
-  virtual bool
-  RecvGetLight(const LightType& aLight, LightConfiguration* aConfig, bool* status) MOZ_OVERRIDE
-  {
-    if (!AssertAppProcessPermission(this, "power")) {
-      return false;
-    }
-    *status = hal::GetLight(aLight, aConfig);
-    return true;
-  }
-
   virtual bool
   RecvAdjustSystemClock(const int64_t &aDeltaMilliseconds) MOZ_OVERRIDE
   {